Foam under a tank with rim

[jhn]

I am putting a 220 gallon tank in a wall, and had a stand custom built. The stand has a flat top on it built out of 2" wood. 2" wood has slight variations in it so the bottom frame/rim on the tank does not sit flat along the width of the tank. Should I try to plain the variation out of it or will putting foam under it solve the problem?

[Coral Hind]

Foam will provide some minor help but I would plane/sand it down flat if possible.

[sen5241b]

I've heard of some reefers putting a layer of styrofoam under the tank. Maybe do both.

[jhn]

I was thinking with all the weight on the rim, the foam wouldn't do a whole lot. Thanks for the input guys, don't need to flood the basement with a busted tank.